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runtime: generate dummy duffcopy

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Although duffcopy is not used on PPC64, duff_ppc64x.s and
mkduff.go don't match. Make it so.

Fixes #38188.

Change-Id: Ic6c08e335795ea407880efd449f4229696af7744
Reviewed-on: https://go-review.googlesource.com/c/go/+/226719
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Cherry Zhang 2020-03-31 19:13:39 -04:00
parent 6edd7971bb
commit 7939c43748
2 changed files with 5 additions and 5 deletions
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6
src/runtime/duff_ppc64x.s
View file

@ -137,7 +137,5 @@ TEXT runtime·duffzero(SB), NOSPLIT|NOFRAME, $0-0
MOVDU R0, 8(R3)
RET
// TODO: Implement runtime·duffcopy.
TEXT runtime·duffcopy(SB),NOSPLIT|NOFRAME,$0-0
MOVD R0, 0(R0)
RET
TEXT runtime·duffcopy(SB), NOSPLIT|NOFRAME, $0-0
UNDEF

4
src/runtime/mkduff.go
View file

@ -194,7 +194,9 @@ func zeroPPC64x(w io.Writer) {
}
func copyPPC64x(w io.Writer) {
fmt.Fprintln(w, "// TODO: Implement runtime·duffcopy.")
// duffcopy is not used on PPC64.
fmt.Fprintln(w, "TEXT runtime·duffcopy(SB), NOSPLIT|NOFRAME, $0-0")
fmt.Fprintln(w, "\tUNDEF")
}
func tagsMIPS64x(w io.Writer) {